In 24 patients with renal failure treated by hemodialysis, it is evaluated (at 8:00 am and at 11:00 am), a day without hemodialysis and another day after the hemodialysis:
* Hunger sensation,
* Olfactory liking assessed separately for 6 foods (2 carbohydrate-, 2 fat- and 2 protein-rich foods) and 2 non-alimentary products,
* Food wanting evaluated by the sequential presentation of 18 images of food (6 fat-, 6 carbohydrate- and 6 protein-rich foods),
* Two blood samples for the assays of leptin, ghrelin, creatinine, albumin and pre-albumin as well as plasma amino acids.
24 healthy subjects are also evaluated in order to compare the results from patients to those of control subjects.
